some explaining comments

lib/peer.ts

@@ -284,8 +284,13 @@ export class Peer extends EventEmitter<PeerEvents> implements IPeer {
 			onfulfilled?: (value: IPeer) => any,
 			onrejected?: (reason: PeerError) => any,
 		) => {
+			// Remove 'then' to prevent potential recursion issues
+			// `await` will wait for a Promise-like to resolve recursively
 			delete this.then;
-			this.once("open", () => onfulfilled?.(this));
+
+			// We don’t need to worry about cleaning up listeners here
+			// `await`ing a Promise will make sure only one of the paths executes
+			this.once("open", () => onfulfilled(this));
 			this.once("error", onrejected);
 		};